| 1 | #!/usr/bin/env bash
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| 2 | #
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| 3 | # Test how long it takes to read many files
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| 4 |
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| 5 | big-stream() {
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| 6 | cat */*.py
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| 7 | # Python messes up here!
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| 8 | #*/*/*.py
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| 9 | }
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| 10 |
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| 11 | setup() {
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| 12 | for i in {1..2}; do
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| 13 | big-stream
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| 14 | done > $BIG_FILE
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| 15 |
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| 16 | wc -l $BIG_FILE
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| 17 | }
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| 18 |
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| 19 | py3-count() {
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| 20 | echo '=== python3'
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| 21 |
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| 22 | # Buffered I/O is much faster
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| 23 | python3 -c '
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| 24 | import sys
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| 25 | i = 0
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| 26 | for line in sys.stdin:
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| 27 | i += 1
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| 28 | print(i)
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| 29 | '
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| 30 | }
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| 31 |
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| 32 | awk-count() {
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| 33 | echo '=== awk'
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| 34 | awk '{ i += 1 } END { print i } '
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| 35 | }
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| 36 |
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| 37 | ysh-count() {
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| 38 | echo '=== ysh'
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| 39 |
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| 40 | local ysh=_bin/cxx-opt/ysh
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| 41 | ninja $ysh
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| 42 |
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| 43 | # New buffered read!
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| 44 | $ysh -c '
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| 45 | var i = 0
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| 46 | for _ in <> {
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| 47 | setvar i += 1
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| 48 | }
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| 49 | echo $i
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| 50 | '
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| 51 | }
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| 52 |
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| 53 | usr1-handler() {
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| 54 | echo "pid $$ got usr1"
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| 55 | }
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| 56 |
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| 57 | exec-sh-count() {
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| 58 | local sh=$1
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| 59 | local do_trap=${2:-}
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| 60 |
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| 61 | echo "pid = $$"
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| 62 |
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| 63 | echo === $sh
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| 64 |
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| 65 | local code='
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| 66 | i=0
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| 67 | while read -r line; do
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| 68 | i=$(( i + 1 ))
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| 69 | done
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| 70 | echo $i
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| 71 | '
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| 72 |
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| 73 | if test -n "$do_trap"; then
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| 74 | # Register BEFORE creating pipeline
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| 75 | #trap usr1-handler USR1
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| 76 | code="
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| 77 | trap 'echo usr1 in \$\$' USR1
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| 78 |
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| 79 | $code
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| 80 | "
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| 81 | fi
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| 82 | #echo "$code"
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| 83 |
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| 84 | # need exec here for trap-demo
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| 85 | exec $sh -c "$code"
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| 86 | }
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| 87 |
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| 88 | readonly BIG_FILE=_tmp/lines.txt
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| 89 |
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| 90 | compare() {
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| 91 |
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| 92 | time wc -l < $BIG_FILE # warmup
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| 93 | echo
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| 94 |
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| 95 | time py3-count < $BIG_FILE
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| 96 | echo
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| 97 |
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| 98 | time awk-count < $BIG_FILE
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| 99 | echo
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| 100 |
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| 101 | time ysh-count < $BIG_FILE
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| 102 | echo
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| 103 |
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| 104 | local osh=_bin/cxx-opt/osh
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| 105 | ninja $osh
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| 106 |
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| 107 | for sh in dash bash $osh; do
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| 108 | # need $0 because it exec
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| 109 | time $0 exec-sh-count $sh < $BIG_FILE
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| 110 | echo
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| 111 | done
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| 112 | }
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| 113 |
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| 114 | trap-demo() {
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| 115 | exec-sh-count bash T < $BIG_FILE &
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| 116 | #$0 sh-count bash T &
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| 117 | #$0 sh-count dash T &
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| 118 |
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| 119 | local pid=$!
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| 120 | echo "background = $pid"
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| 121 | pstree -p $pid
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| 122 |
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| 123 | #wait
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| 124 | #echo status=$?
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| 125 | #return
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| 126 |
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| 127 | while true; do
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| 128 | # wait for USR1 to be registered
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| 129 | sleep 0.05
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| 130 |
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| 131 | kill -s USR1 $pid
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| 132 | local status=$?
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| 133 |
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| 134 | echo status=$status
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| 135 | if test $status -ne 0; then
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| 136 | break
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| 137 | fi
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| 138 |
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| 139 | done
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| 140 |
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| 141 | wait
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| 142 | echo status=$?
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| 143 | }
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| 144 |
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| 145 | "$@"
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| 146 |
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